As I said in my recent mail, the place to address this is upstream.
And PPC64LE does not appear in the BuildFarm of the Boost community.
I can see an obvious solution to that: somebody with access to Power systems should set up
an automated regression tester and contribute test results to the upstream project. That
way the Boost devs will know there are problems. Fedora is not the place to fix it if the
code is in such poor state for Power.
https://www.boost.org/development/running_regression_tests.html